# Conversation & REST APIs - Delivery Receipt Issue

- Provider: [Sinch](https://down.guide/sinch)
- Level: confirmed
- Impact: Degraded
- lasted 2h 44m
- started 2026-05-06 14:33 UTC
- SMS, REST - US, REST - EU +3
- eu, us
- id: DWN-87f841b599
- Official page: https://stspg.io/k3cfp81jjyb1

## Updates from Sinch
### 2026-05-06 14:33 UTC: investigating
We are currently experiencing an issue with our Conversation and REST APIs.
Incident Start Time: 2026-05-05 07:00 UTC
Impact: A subset of Delivery Receipts for concatenated messages will receive an unknown state if submitted via the Conversation or REST APIs.
We will provide ongoing updates on this page. For any inquiries, please contact us at support@sinch.com.

### 2026-05-06 16:22 UTC: monitoring
A fix has been implemented and we are monitoring the results.

### 2026-05-06 17:17 UTC: resolved
This incident has been resolved.
Incident Start Time: 2026-05-05 07:00 UTC
Incident End Time: 2026-05-06 16:16 UTC

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